<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
        "http://www.w3.org/TR/html4/loose.dtd">
<html>
    <head>
        <title>List</title>
    </head>
    <body>

        <ol>
            <li>Order list item 1</li>
            <li>Order list tiem 2</li>
        </ol>


        <!-- ol 套 ul-->
        <ol>
            <li>A</li>
            <li>B</li>
            <ul>
                <li>B1</li>
                <li>B2</li>
            </ul>
            <li>C</li>
        </ol>
    </body>
</html>